Add #[must_use] to thread::Builder I copied the wording of the [`fmt::Debug` builders](https://doc.rust-lang.org/src/core/fmt/builders.rs.html#444). Affects: ```rust std/src/thread/mod.rs:289:5 std:🧵:Builder fn new() -> Builder; std/src/thread/mod.rs:318:5 std:🧵:Builder fn name(mut self, name: String) -> Builder; std/src/thread/mod.rs:341:5 std:🧵:Builder fn stack_size(mut self, size: usize) -> Builder; ``` Parent issue: #89692 r? `@joshtriplett` |
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